Free Modula-2 Compilers
Free compilers for the Modula 2 language
Free Modula-2 Compilers
Modula-2 is a general purpose programming language created by Niklaus Wirth (creator of the Pascal language). The compilers (with or without an integrated development environment or editor) listed here either implement the ISO version of the Modula-2 language or the language defined in Wirth's Programming in Modula-2 (often referred to as "PIM").
If you are looking for books on Modula-2, check out the selection at Amazon.
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Disclaimer
The information provided on this page comes without any warranty whatsoever. Use it at your own risk. Just because a program, book, document or service is listed here or has a good review does not mean that I endorse or approve of the program or of any of its contents. All the other standard disclaimers also apply.
Free Modula-2 Compilers
- Gardens Point Modula

The Gardens Point Modula compiler implements the Modula-2 language on Linux, FreeBSD, Sparc, and Windows (via Cygwin or CLR/NET). It follows for the most part the language given in the ISO standard, although there are deviations. (Please see the documentation for details.)
- GNU Modula-2

The GNU Modula-2 compiler, at the time of this writing, is currently under development. Not all of the ISO language has been implemented and work on the libraries has only just started. (Again, this is relative to the time this review is written, so by the time you read this, it may have changed. As always, check the site for the latest information.) It uses the GNU C++ compiler to compile portions of the code. The program is currently available in source form only and can be compiled on Unix-type systems like Linux and also Windows (via Cygwin).
- Ulm's Modula-2 System
Ulm's Modula-2 System comprises a Modula-2 compiler, Modula-2 beautifier, Modula-2 debugger, a Modula-2 tags utility (like ctags for C), an LALR(1) parser generator for Modula-2, a Modula-2-Prolog interpreter, and a Pascal to Modula-2 translator. It is distributed under the terms of the GNU GPL (compiler and tools) and the GNU LGPL (library). It supports SPARCv8/Solaris 2.x and MC68020/SunOS 4.1x.
- Native XDS-x86 Personal Edition Modula-2 / Oberon-2 Development Toolset
This is a free optimizing ISO Modula-2 and Oberon-2 compiler that runs on Windows and Linux. It allows you to use third party C libraries, access the operating system's API, etc.
- Megamax Modula-2 for Atari ST
Megamax Modula-2 is a compiler for the Atari ST that is now released as freeware. It comes with complete source code for the libraries, compiler, linker, editors, etc. The documentation, in German, can also be downloaded from that site.
- Modula-2 Compiler for IRIX
This is a Modula-2 compiler for IRIX released under the GNU GPL. It seems to be in a "Pre-Alpha" stage, with no new developments to the compiler since 2001.
- The Karlsuhe Modula-2 Compiler MOCKA
This compiler implements the complete Modula-2 language as defined in the third edition of Niklaus Wirth's Programming In Modula-2, with some extensions (long and short integers, cardinal, real types, FOREIGN MODULE). It has an interactive user interface that provides an automatic "make" facility. The website boasts of its fast compilation speed. Note: the free version is only available for Linux and 386BSD.
- M2F Modula-2 Compiler
This is a complete Modula-2 compiler that is compliant with the second edition of Niklaus Wirth's Programming In Modula-2. It generates code for the Intel i86 family of processors and can even pipeline Pentium code. Source code is available. Precompiled binaries are available for Linux.
- Maclogimo Plus
This is an unsupported Macintosh 68k Modula-2 compiler. It includes a compiler, linker, library modules and a loader. It generates native 68k code.
- MacMETH
This is a Modula-2 programming environment for the Macintosh that is purportedly fast. It comprises a compiler, linker, dynamic linking-loader, symbolic debugger and editor.
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